Sterling 882.00290.00 User Manual

15, 30, and 60 CFM Dryers

With AP-0 Controls

Part Number: 882.00290.00

Bulletin Number: DH1-640-2

Effective: 05/15/06

Write Down Your Serial Numbers Here For Future Reference:
_________________________ _________________________
_________________________ _________________________
_________________________ _________________________

We are committed to a continuing program of product improvement.
Specifications, appearance, and dimensions described in this manual are subject to change without notice.

DCN No. ____________
© Copyright 2006
All rights reserved.

Shipping Information

Unpacking and Inspection

You should inspect your dryer for possible shipping damage.
Thoroughly check the equipment for any damage that might have occurred in transit, such as

broken or loose wiring and components, loose hardware and mounting screws, etc.

In the Event of Shipping Damage

According to the contract terms and conditions of the Carrier, the responsibility of the
Shipper ends at the time and place of shipment.

Notify the transportation company’s local agent if you discover damage.
Hold the damaged goods and packing material for the examining agent’s inspection.

return any goods before the transportation company’s inspection and authorization.

File a claim with the transportation company. Substantiate the claim by referring to the
agent’s report. A certified copy of our invoice is available upon request. The original Bill of
Lading is attached to our original invoice. If the shipment was prepaid, write us for a
receipted transportation bill.

Advise customer service regarding your wish for assistance and to obtain an RMA (return
material authorization) number.

If the Shipment is Not Complete

Check the packing list as back-ordered items are noted on it. You should have:

; Dehumidifying Dryer
; Bill of lading
; Packing list
; Operating and Installation packet
; Electrical schematic and panel layout drawings
; Component instruction manuals

Re-inspect the container and packing material to see if you missed any smaller items during
unpacking.

Do not

If the Shipment is Not Correct

If the shipment is not what you ordered, contact the shipping department immediately. For
shipments in the United States and Canada, call 1 [phone]; for all other countries, call
our international desk at [phone]. Have the order number and item number available.
Hold the items until you receive shipping instructions.

Returns

Do not return any damaged or incorrect items until you receive shipping instructions from the
shipping department.

Dehumidifying Dryers 2

Table of Contents

CHAPTER 1: SAFETY................................................................ 5

1-1 How to Use This Manual.............................................................................................6

Safety Symbols Used in this Manual.....................................................................6

1-2 Safety Tag Information ……..………………………………………………………………7
1-3

Warnings and Precautions..........................................................................................6

1-4 Responsibility..............................................................................................................7

General Responsibility...........................................................................................7

Operator Responsibility.........................................................................................8

Maintenance Responsibility...................................................................................9

Reporting a Safety Defect .....................................................................................9

CHAPTER 2: FUNCTIONAL DESCRIPTION ........................... 10

2-1 Models Covered in This Manual................................................................................10

2-2 General Description...................................................................................................10

The drying system ……………………………………………………………………… 11

What is desiccant? ..............................................................................................11

The Process/Regeneration Cycle........................................................................11

2-3 Standard Features.....................................................................................................11

Mechanical Features...........................................................................................11

Electrical Features...............................................................................................11

Controller Features..............................................................................................11

2-4 Options......................................................................................................................12

2-5 Safety Devices and Interlocks...................................................................................12

CHAPTER 3: INSTALLATION.................................................. 14

3-1 Uncrating the Equipment...........................................................................................14

3-2 Rigging and Placing the Dryer...................................................................................14

3-3 Electrical Connections...............................................................................................16

3-4 Setup Procedures......................................................................................................17

Checking for Proper Blower Rotation..................................................................18

Drying Hopper Air Trap Considerations...............................................................18

Optional Aftercooler.............................................................................................18

3-5 Initial Start-up............................................................................................................18

Pre-Startup Checks.............................................................................................19

CHAPTER 4: OPERATION....................................................... 19

4-1 Start-up......................................................................................................................19

4-2 Controller Description and Operation........................................................................19

Identifying Control Panel Indicator Lights and Switches for the Standard

Controller............................................................................................................. 19

Process Air Temperature Controller....................................................................20

Setting the Process Air Temperature ..................................................................22

Restoring the Process Air Temperature Controller (E5CN) to Factory Settings..22

Process Air Dew Point Display............................................................................25

Setting the High Dew Point Alarm.......................................................................25

Dehumidifying Dryers 3

Restoring the Process Air Dew Point Meter (E5CK) to Factory Setup................25

Redundant Safety Controller Display ..................................................................26

Setting the Redundant Safety Controller.............................................................26

Restoring the WATLOW Redundant Safety Controller to Factory Setup............26

4-3 System Operation Procedures..................................................................................29

Controller Operation (Without Optional Alarm Horn & Reset Button).................28

Controller Operation (With Optional Alarm Horn & Reset Button).......................29

Alarm Display Messages.....................................................................................31

4-4 Auto-Tuning the Dryer...............................................................................................32

4-5 Shutting Down the Dryer...........................................................................................32

CHAPTER 5: MAINTENANCE .................................................35

5-1 Preventative Maintenance Schedule.........................................................................35

5-2 Preventative Maintenance.........................................................................................35

Servicing Process Air Filters................................................................................35

Servicing the Dew Point Monitor .........................................................................37

5-3 Corrective Maintenance ............................................................................................37

Symptoms of Worn Desiccant.............................................................................38

Replacing Worn Desiccant..................................................................................37

Replacing the Regeneration Heaters ..................................................................39

Replacing the Process Heaters ……………………………………………………. 40
Replacing / Cleaning the Cooling Coil …………………………………………….. 40

CHAPTER 6: TROUBLESHOOTING .......................................42

6-1 Introduction................................................................................................................42

6-2 Determining Temperature Controller Errors or Sensor Errors...................................44

Using a Thermocouple..........................................Error! Bookmark not defined.

Using a Platinum Resistance Thermometer..........Error! Bookmark not defined.

CHAPTER 7: APPENDIX.......................................................... 45

7-1 Warranty....................................................................................................................45

Warranty Specifications.......................................................................................45

Warranty Restrictions..........................................................................................45

Warranty Liabilities..............................................................................................45

Customer Responsibilities...................................................................................46

7-2 Technical Specifications............................................................................................46

Annex B Information............................................................................................46

Aftercooler Design Specifications........................................................................47

7-3 Drawings and Diagrams............................................................................................47

7-4 Spare Parts List.........................................................................................................50

7-5 Returned Material Policy...........................................................................................52

Credit Returns .....................................................................................................52

Warranty Returns ................................................................................................52

7-6 Dryer Identification (Serial Number) Tag...................................................................52

7-7 Technical Assistance.................................................................................................53

Parts Department ................................................................................................53

Service Department.............................................................................................53

Sales Department................................................................................................53

Contract Department...........................................................................................53

Dehumidifying Dryers 4

Chapter 1: Safety

1-1 How to Use This Manual

Use this manual as a guide and reference for installing, operating, and maintaining your
drying system. The purpose is to assist you in applying efficient, proven techniques that
enhance equipment productivity.

This manual covers only light corrective maintenance. No other maintenance should be
undertaken without first contacting a service engineer.

The Functional Description section outlines models covered, standard features, and safety
features. Additional sections within the manual provide instructions for installation, pre­operational procedures, operation, preventive maintenance, and corrective maintenance.

The Installation chapter includes required data for receiving, unpacking, inspecting, and setup
of the drying system. We can also provide the assistance of a factory-trained technician to
help train your operator(s) for a nominal charge. This section includes instructions, checks,
and adjustments that should be followed before commencing with operation of the drying
system. These instructions are intended to supplement standard shop procedures performed
at shift, daily, and weekly intervals.

The Operation chapter includes a description of electrical and mechanical controls, in
addition to information for operating the dryer safely and efficiently.

The Maintenance chapter is intended to serve as a source of detailed assembly and
disassembly instructions for those areas of the equipment requiring service. Preventive
maintenance sections are included to ensure that your drying system provides excellent, long
service.

The Troubleshooting chapter serves as a guide for identification of most common problems.
Potential problems are listed, along with possible causes and related solutions.

The Appendix contains technical specifications, drawings, schematics, parts lists, and
available options. A spare parts list with part numbers specific to your machine is provided
with your shipping paperwork package. Refer to this section for a listing of spare parts for
purchase. Have your serial number and model number ready when ordering.

Safety Symbols Used in this Manual

The following safety alert symbols are used to alert you to potential personal injury hazards.
Obey all safety messages that follow these symbols to avoid possible injury or death.

DANGER! DANGER indicates an imminently hazardous situation that, if not

avoided, will result in death or serious injury.

WARNING! WARNING indicates a potentially hazardous situation or practice that,

if not avoided, could result in death or serious injury.

Caution! CAUTION indicates a potentially hazardous situation or practice that,

if not avoided, may result in minor or moderate injury or in property
damage.

Dehumidifying Dryers Chapter 1: Safety 5 of 53

1-2 Safety Tag Information

Dryer Safety Tags

Hot! Read Operation
and Installation
Manual

High Voltage Earth Ground

Inside Enclosure

Lifting Point Ground

1-3 Warnings and Precautions

Our equipment is designed to provide safe and reliable operation when installed and operated
within design specifications, following national and local safety codes. This may include, but
is not limited to OSHA, NEC, CSA, SPI, and any other local, national and international
regulations.

PE Protected Earth

To avoid possible personal injury or equipment damage when installing, operating, or
maintaining this equipment, use good judgment and follow these safe practices:

; Read and follow these operation and installation instructions when installing,

operating, and maintaining this equipment. If these instructions become
damaged or unreadable, additional copies are available from the manufacturer.

; Follow all SAFETY CODES.
; Wear SAFETY GLASSES and WORK GLOVES.
; Work only with approved tools and devices.
; Disconnect and/or lock out power before servicing or maintaining the equipment.
; Use care when LOADING, UNLOADING, RIGGING, or MOVING this

equipment.

; Operate this equipment within design specifications.
; OPEN, TAG, and LOCK ALL DISCONNECTS before working on equipment.

You should remove the fuses and carry them with you.

; Make sure the equipment and components are properly GROUNDED before you

switch on power.

; Use EXTEREME CAUTION when working with dryer. HIGH HEAT can be

dangerous. Keep body parts, tools, clothing, and debris away from dryer.

Dehumidifying Dryers Chapter 1: Safety 6

; When welding or brazing in or around this equipment, make sure VENTILATION is

ADEQUATE. PROTECT adjacent materials from flame or sparks by shielding with

sheet metal. An approved FIRE EXTINGUISHER should be close at hand and
ready for use if needed.

; Do not restore power until you remove all tools, test equipment, etc., and the

equipment and related components are fully reassembled.

; Only PROPERLY TRAINED personnel familiar with the information in this

manual should work on this equipment.

We have long recognized the importance of safety and have designed and manufactured our
equipment with operator safety as a prime consideration. We expect you, as a user, to abide
by the foregoing recommendations in order to make operator safety a reality.

1-4 Responsibility

These machines are constructed for maximum operator safety when used under standard
operating conditions and when recommended instructions are followed in the maintenance
and operation of the machine.

All personnel engaged in the use of the machine should become familiar with its operation as
described in this manual.

Proper operation of the machine promotes safety for the operator and all workers in its
vicinity.

Each individual must take responsibility for observing the prescribed safety rules as outlined.
All warning and danger signs must be observed and obeyed. All actual or potential danger
areas must be reported to your immediate supervisor.

General Responsibility

No mater who you are, safety is important. Owners, operators and maintenance personnel
must realize that every day, safety is a vital part of their jobs.

If your main concern is loss of productivity, remember that production is always affected in a
negative way following an accident. The following are some of the ways that accidents can
affect your production:

• Loss of a skilled operator (temporarily or permanently)

• Breakdown of shop morale

• Costly damage to equipment

• Downtime

An effective safety program is responsible and economically sound.
Organize a safety committee or group, and hold regular meetings. Promote this group from

the management level. Through this group, the safety program can be continually reviewed,
maintained, and improved. Keep minutes or a record of the meetings.

Hold daily equipment inspections in addition to regular maintenance checks. You will keep
your equipment safe for production and exhibit your commitment to safety.

Dehumidifying Dryers Chapter 1: Safety 7

Please read and use this manual as a guide to equipment safety. This manual contains safety
warnings throughout, specific to each function and point of operation.

Operator Responsibility

The operator’s responsibility does not end with efficient production. The operator usually has
the most daily contact with the equipment and intimately knows its capabilities and
limitations.

Plant and personnel safety is sometimes forgotten in the desire to meet incentive rates, or
through a casual attitude toward machinery formed over a period of months or years. Your
employer probably has established a set of safety rules in your workplace. Those rules, this
manual, or any other safety information will not keep you from being injured while operating
your equipment.

Learn and always use safe operation. Cooperate with co-workers to promote safe practices.
Immediately report any potentially dangerous situation to your supervisor or appropriate
person.

REMEMBER:

• NEVER place your hands or any part of your body in any dangerous location.

• NEVER operate, service, or adjust the dryer without appropriate training and first

reading and understanding this manual.

• NEVER try to pull material out of the dryer with your hands while it is running!

• Before you start the dryer check the following:

• Remove all tools from the dryer;

• Be sure no objects (tools, nuts, bolts, clamps, bars) are laying in the

hopper area;

• If your dryer has been inoperative or unattended, check all settings before starting the

unit.

• At the beginning of your shift and after breaks, verify that the controls and other

auxiliary equipment are functioning properly.

• Keep all safety guards in place and in good repair. NEVER attempt to bypass, modify,

or remove safety guards. Such alteration is not only unsafe, but will void the warranty
on your equipment.

• When changing control settings to perform a different mode of operation, be sure

selector switches are correctly positioned. Locking selector switches should only be
adjusted by authorized personnel and the keys removed after setting.

• Report the following occurrences IMMEDIATELY:

• unsafe operation or condition

• unusual dryer action

• leakage

• improper maintenance

Dehumidifying Dryers Chapter 1: Safety 8

• NEVER stand or sit where you could slip or stumble into the dryer

while working on it.

• DO NOT wear loose clothing or jewelry, which can be caught while working on a

dryer. In addition, cover or tie back long hair.

• Clean the dryer and surrounding area DAILY, and inspect the machine for loose,

missing or broken parts.

• Shut off power to the dryer when it is not in use. Turn the switch to the OFF position,

or unplug it from the power source.

Maintenance Responsibility

Proper maintenance is essential to safety. If you are a maintenance worker, you must make
safety a priority to effectively repair and maintain equipment.

Before removing, adjusting, or replacing parts on a machine, remember to turn off all electric
supplies and all accessory equipment at the machine, and disconnect and lockout electrical
power. Attach warning tags to the disconnect switch.

When you need to perform maintenance or repair work on a dryer above floor level, use a
solid platform or a hydraulic elevator. If there is a permanently installed catwalk on your
equipment, use it. The work platform should have secure footing and a place for tools and
parts. DO NOT climb on dryers, machines, or work from ladders.

If you need to repair a large component, use appropriate handling equipment. Before you use
handling equipment (portable “A” frames, electric boom trucks, fork trucks, overhead cranes)
be sure the load does not exceed the capacity of the handling equipment or cause it to become
unstable.

Carefully test the condition of lifting cables, chains, ropes, slings, and hooks before using
them to lift a load.

Be sure that all non-current carrying parts are correctly connected to earth ground with an
electrical conductor that complies with current codes. Install in accordance with national and
local codes.

When you have completed the repair or maintenance procedure, check your work and remove
your tools, rigging, and handling equipment.

Do not restore power to the dryer until all persons are clear of the area. DO NOT start and
run the dryer until you are sure all parts are functioning correctly.

BEFORE you turn the dryer over to the operator for production, verify all dryer enclosure
panels, guards and safety devices are in place and functioning properly.

Reporting a Safety Defect

If you believe that your equipment has a defect that could cause injury, you should
immediately discontinue its use and inform the manufacturer.

The principle factors that can result in injury are failure to follow proper operating procedures
(i.e. lockout/tag out), or failure to maintain a clean and safe working environment.

Dehumidifying Dryers Chapter 1: Safety 9

Chapter 2: Functional Description

2-1 Models Covered in This Manual

This manual provides operation, installation, and maintenance instructions for 15, 30, and 60
cfm dehumidifying dryers. Model numbers are listed on the serial tag. Make sure you know
the model and serial number of your equipment before contacting the manufacturer for parts
or service.

Our dehumidifying mini dryers are designed to generate heated dehumidified air (at a very
low dew point) at carefully controlled temperatures for use in plastic drying systems. The
dryer circulates hot air through a column of plastic resin in the large drying hopper. The resin
in the hopper is discharged through a slide gate in a “first in, first out” manner.

2-2 General Description

The Drying System

Dehumidifying dryers are used to generate very low dew point air heated to a controlled
temperature for drying plastic pellets and regrind.

Our dryers force hot, dry air through resin in a drying hopper, where air picks up moisture
from the material and draws it back to the dryer. In the dryer, a desiccant bed strips moisture
from the air. The dried process air is then re-heated and delivered back into the drying
hopper for more moisture removal.

Portion of the low dew point process air is directed to the desiccant tank that is off process.
This air is heated to approximately 450°F (232°C) before entering the bed that is in
regeneration. The moisture is then forced from the desiccant before being exhausted into the
atmosphere. A small amount of ambient air is introduced into the process return air filter to
make up for the air lost during the bed regeneration. To compensate for the humidity content
in the air, this dryer is supplied with the proper amount of desiccant.

What is desiccant?

Desiccant is a material that attracts and holds (absorbs) water from the air. The desiccant our
dryers use is a synthetic crystalline metal aluminosilicate blended with a clay binder and
formed into beads.

The Process/Regeneration Cycle

Our dryers have two desiccant beds. While one bed is on-line in the process air loop, the
other is off-line, being regenerated.

When a desiccant bed is on-line, it absorbs moisture from the process air. In time, the bed
becomes saturated with moisture and needs to be regenerated. The dryer automatically
redirects the process airflow to the second bed, and starts the regeneration cycle on the first
bed.

During regeneration, the dryer system heats the very low dew point air and forces it through
the desiccant bed. The moisture driven off the bed bleeds to the atmosphere.

Dehumidifying Dryers Chapter 2: Functional Description 10 of 53

2-3 Standard Features

Mechanical Features

• Dual desiccant beds

• Electrically-actuated air valve

• 13X Molecular Sieve

• Single regenerative process blower

• Drying temperature range of 180ºF to 250ºF (82ºC to 121ºC).

• 2.5” hose connections

Electrical Features

• Process thermocouple to be connected to drying hopper air inlet.

• Nema 12 control enclosure

• NFPA79 machinery electrical standards

• Non-fused electrical disconnect

• Branch fusing

• Mercury process heater co ntactor

• Regeneration temperature control

• Process high temperature alarm light

• Process/regeneration heater box

• High temperature safety system (Process/Regeneration)

Controller Features

• Mitsubishi programmable relay controller

• Display of process temperature set point and actual settings

Dehumidifying Dryers Chapter 2: Functional Description 11 of 53

2-4 Options

Options marked with “*” indicate options that can be factory installed or retrofitted in the
field.

• * Process temperature up to 400ºF (204º C) or below 180ºF (82ºC), including

aftercooler with dryer and silicone insulated delivery hose.

• * If the dryer is a central dry air generator, it will not have a process heater box.

• * Plasticizer trap (with cooling coil) in lieu of standard aftercooler (mounts outside on

back of dryer).

• * Drawer magnet, stainless steel construction. (for drying hopper)

• * Casters, two (2) fixed and two (2) swivels.

• * Machine mount adapter to accommodate a dryer and corresponding hopper.

• * Low temperature operation below 180ºF (82ºC), includes an u=internal cooler.

• * Redundant high temperature safety circuit.

• * Cart with caster with hopper mounting place.

• * Insulated air hose for air delivery.

Note: For below 180°F (82ºC), cooler needs to cool the

air coming out of the desiccant tank prior to entering the
process heater box.

• * Audible alarm.

• * Dew Point monitor with digital read-out.

2-5 Safety Devices and Interlocks

This section includes information on safety devices and procedures that are inherent to the
Dryer. This manual is not intended to supersede or alter safety standards established by the
user of this equipment. Instead, the material contained in this section is recommended to
supplement these procedures in order to provide a safer working environment.

At the completion of this section, the operator and maintenance personnel will be able to do
the following:

• Identify and locate specific safety devices.

• Understand the proper use of the safety devices provided.

• Describe the function of the safety device.

Safety Circuit Standards

Safety circuits used in industrial systems protect the operator and maintenance personnel
from dangerous energy. They also provide a means of locking out or isolating the energy for
servicing equipment.

Various agencies have contributed to the establishment of safety standards that apply to the
design and manufacture of automated equipment. The Occupational Safety and Health
Administration (OSHA) and the Joint Industrial council (JIC) are just a few of the
organizations that have joined with the plastics industry to develop safety standards.

Dehumidifying Dryers Chapter 2: Functional Description 12 of 53

Every effort has been made to incorporate these standards into the design of the drying
system; however, it is the responsibility of the personnel operating and maintaining the
equipment to familiarize themselves with the safety procedures and the proper use of any
safety devices.

Fail Safe Operation

If a safety device or circuit should fail, the design must be such that the failure causes a
“Safe” condition. As an example, a safety switch must be a normally open switch. The switch
must be held closed with the device it is to protect. If the switch fails, it will go to the open
condition, tripping out the safety circuit.

At no time should the safety device fail and allow the operation to continue. For
example, if a safety switch is guarding a motor, and the safety switch fails, the motor should
not be able to run.

Safety Device Lock-Outs

Some safety devices disconnect electrical energy from a circuit. The safety devices that are
used on these dryers are primarily concerned with electrical power disconnection and the
disabling of moving parts that may need to be accessed during the normal operation of the
machine.

Some of the safety devices utilize a manual activator. This is the method of initiating the
safety lock out. This may be in the form of a plug, lever or a handle. Within this lockable
handle, there may be a location for a padlock. Personnel servicing the equipment should
place a padlock in the lockout handle.

In addition to the safety devices listed above, these dryers are equipped with a line cord plug.
This allows the operator or maintenance personnel to unplug the dryer from its power source
and tag it out. The plug can then be tagged with any number of approved electrical lockout
tags available at most electrical supply stores.

WARNING! Always disconnect and lockout all electrical power and pneumatic (i.e. compressed air)

sources prior to servicing or cleaning the dryer. Failure to do so may result in serious
injury. No one but the person who installed the lockout may remove it.

Dehumidifying Dryers Chapter 2: Functional Description 13 of 53

Chapter 3: Installation

3-1 Uncrating the Equipment

Dehumidifying Dryers are shipped mounted on a skid, enclosed in a plastic wrapper, and
contained in a cardboard box.

1. Pry the crating away from the skid.

Note: Remove the nails holding the box to the skid and lift the box

off carefully; avoiding staples in the 1’ x 4’ wood supports.
Cut the steel banding.

2. Use a pry bar to remove the blocks securing the unit to the skid.

3. Lift unit from sides. Use a pry bar if necessary to carefully remove the

skid from the unit.

4. Lower slowly.

3-2 Rigging and Placing the Dryer

Take care when rigging and placing the dryer. Figures 1, 2 and 3 on the following pages show
a suggested safe rigging diagram. It lets you lift the dryer/hopper unit vertically using a fork
truck for installation on the machine throat. Adjust chain lengths at the center sling bracket
before you lift the unit. Your dryer has built-in lifting lugs.

Caution! If you are mounting a machine-mount dryer with a magnet or transition adaptor on the

machine throat, you must provide additional support to hold the dryer securely on the
machine.

Be aware that off-center static and dynamic hopper loading can occur with machine
vibration. Again, provide additional support to hold the dryer securely on the machine.

For 60 cfm dryer units, you must provide additional support to stabilize these units and
to protect personnel when installing on machine throats.

Use caution and observe safety rules when lifting and placing your dryer!

Dehumidifying Dryers Chapter 3: Installation 14 of 53

Figure 1: Suggested Lift Rigging for Cart Mount Dryers

DO NOT

USE

ON

F

PROCESS

F

DEW POINT

TEMPERATURE

O

CONTROL POWER

ALARM HORN

ON OFF

ALARM ALARM Silencer

USE

FORK

LIFT

TRUCK

Caution! Do not use a hoist to move or rig your Drying/Conveying System when it is

mounted on a cart! Moving the unit with a hoist will cause it to become

unstable and may cause damage to the equipment and/or injury to

personnel!

Figure 2: Suggested Lift Rigging for Cart Mounted Dryers

Note: Note: Floor Mounted Dryers can be lifted by hoist or fork

USE

Overhead

Crane

ON

PROCESS

TEMPERATURE

CONTROL POWER
ON OFF

ALARM

F
F

DEW POINT

O

ALARM HORN

ALARM Silencer

USE

FORK

LIFT

TRUCK

Dehumidifying Dryers Chapter 3: Installation 15 of 53

(

Figure 3: Suggested Lift Rigging for Cart Mounted Dryers

Mounting flange

E

E

Diameter hole:

TEMPERATURE

CONTROL POWER
ON OFF

O

ALARM HORN

ALARM

ALARM Silencer

ON

F

PROCESS

F

DEW POINT

Caution! When using a hoist to move a machine mounted dryer, ALWAYS attach

chains to the three (3) locations/lifting points on the unit! Moving the

Dryer without the chains attached to all of the lifting points will cause the

unit to become unstable and may cause damage to the Dryer and/or injury

to personnel!

Hopper mounting flanges on 0.75 and

Notes:

and 1.5 cu. ft. (20 & 40 liter) hoppers
are supplied blank so the customer
can drill to match existing machine throat.

3.0 cu. ft. (80 liter) hoppers and larger

are not supplied with a cast flange

as shown).

F

3-3 Electrical Connections

When making electrical connections to your dryer, ensure that you take into consideration
and make arrangements for the following:

• A qualified electrician should make all electrical connections.

• Fulfill all national, state, and local safety and electrical code requirements.

• The serial tag lists voltage, phase, and amp draw information:

• Line voltage must be within plus or minus ten percent (±10%) of the

voltage listed on the serial tag, or damage may occur. Phase imbalance
must be less than two percent (2%).

• Connect main power to the dryer at the disconnect or terminals in the upper right

corner of the control enclosure.

• Install a fused disconnect with a lockout feature in the power main leading to the dryer.

• The power drop must include a ground wire.

• Make sure all electrical connections are tight.

Dehumidifying Dryers Chapter 3: Installation 16 of 53

3-4 Setup Procedures

This section provides the procedures necessary for configuring your portable
drying/conveying system.

Configuration of your unit includes checking for proper blower rotation and installing the
optional aftercooler (on 60 cfm models). We recommend that you carry out these procedures
in the order given here.

Note: Before carrying out these procedures, install all equipment

Checking for Proper Blower Rotation

Three-Phase Models

Caution! In three-phase models, incorrect phasing of power leads can cause

backward rotation of blower motors and CONTAMINATION OF THE

DESICCANT!

Always check blower rotation before putting material in the drying hopper!

The blower is rotating properly when air flows from the delivery outlet.

Note: Holding your hand in front of the air return will also

as described in this section.

indicate if the blower rotates in the proper direction (by
feeling suction).

If the three-phase blower rotates improperly, reverse any two wires at the fused disconnect
outside the dryer or at the disconnect/terminal in the control enclosure. This assures that the
blower rotates in the proper direction.

Drying Hopper Air Trap Considerations (If Equipped)

Our exclusive air trap assembly on the top of the drying hopper prevents ambient air from
contaminating the material being dried. To ensure that your unit will operate at peak
efficiency, do the following:

• Keep the material level at the mid point of the air trap

This can be achieved by utilizing a hopper loader or vacuum conveying system to
supply material to the drying system.

Installing the Optional Aftercooler

Water-cooled 15/30/60 cfm models use a water-to-air heat exchanger as an aftercooler.
Cooling water is required for this design (3 gpm at 85°F or lower). Return air from the
hopper passes through the air filter to trap fines and dust before entering the heat exchanger.

Installing Water Lines
(Hose and Hose Clamp)

When installing the water lines, ensure that the aftercooler utilizes either tower, chilled or city
water as warm as 85°F (29°C). Recommended flow rate is three (3 gpm) gallons per minute
(11 liters per minute).

Dehumidifying Dryers Chapter 3: Installation 17 of 53

NOTE: If the Aftercooler is used as a plasticizer trap, the water temperature of 50°F or lower
is recommended.

3-5 Initial Start-up

Pre-Startup Checks

; Check the process and return hoses for tight connections.
; Check all companion equipment, such as the drying hopper; verify that the loading

system is ready for operation.

; Verify that all dryer electrical connections are tight.
; Verify that the thermocouple is properly installed at the hopper inlet.
; Verify temperature unit/scale. (°F or °C)

Dehumidifying Dryers Chapter 3: Installation 18 of 53

Chapter 4: Operation

4-1 Start-up

1. Turn on (energize) the disconnect switch in your power drop, and then turn on the one on the

dryer.

2. Turn the system

3. Close the slide gate at the bottom of the drying hopper.

4. Fill the drying hopper with material.

5. Turn the dryer

ON/OFF switch to ON to energize the display panel.

Make sure that the blowers turn in the right direction.

ON switch to START to start the dryer.

The process blower starts.

6. If your dryer has a water-cooled aftercooler, make sure that sufficient cooling water (3gpm at

85°F or lower) flows properly through the coil and that you have bled any trapped air from the
system. Make sure the aftercooler has the proper supply water temperature.

7. Set the process set point on the temperature controller.

8. After the proper pre-drying time for the initial hopper fill has elapsed, fully open the drying

hopper slide gate.

9. Turn on the machine convey ON/OFF switch to ON, and set the convey timer for the proper

conveying time.

Note: To allow proper residence time during continuous processing,

maintain the material level in the hopper at the midpoint of the air trap
assembly.

4-2 Controller Description and Operation

Identifying Control Panel Indicator Lights and Switches for the Standard
Controller

Switches

System OFF/ON/START Switch. This switch energizes or de-energizes control power to

the indicator panel and starts the dryer. (The controller can be energized without the dryer
running.)

Optional Alarm Silence Switch. Press this switch to silence the horn when a high

temperature process/regeneration or blower failure alarm activates.

Indicator Lights
Alarm Light. This feature works in conjunction with the alarm horn to warn the operator of

a high bed safety temperature, a regeneration heater fault, or a blower failure. This warning
is reset by pressing the alarm silence button.

Figure 4: Typical Dryer Control Panel (shown with the optional dew point monitor).

Dehumidifying Dryers Chapter 4: Operation 19 of 53

V

Process Air Temperature Controller

Our dryers use a microprocessor-based PID temperature controller for maintaining process air
temperature. The controller is a modular, self-contained unit you can remove from the
mounting housing. All parameters except for the process air set point are factory set and
adjusted; normally, no field adjustment to the internal controls is necessary.

Figure 5: Typical Process Air Temperature Controller

P

SV

Identifying Process Air Temperature Controller LED Indicators

Indicator Name Description

Dehumidifying Dryers Chapter 4: Operation 20 of 53

Indicator Name Description

PV

8.8.8.8

SV

8.8.8.8

OUT1

OUT2

AT

Indicator Name Description

Process Value
Numeric LED

Set Value
Numeric LED

Out 1 LED Lit when Control Output 1 is on. The Out1

Out 2 LED Lit when Control Output 2 is on. Not used in

AT LED Flashes during auto-tuning in process value (PV)

During normal operation, the process value (PV)
numeric LED indicator displays the process
temperature at the To Process thermocouple. It
also lists parameters during setup and error
messages if any errors occur.

During normal operation, the set value (SV)
numeric LED indicator displays the process set
point temperature selected for the dryer. The dryer
then maintains this set point temperature. This
LED indicator also displays parameter and pre-set
function values during configuration setup.

indicator lights when the controller signals the
process heaters to be energized.

this application.

screen.

ALARM1 ALARM 1 LED

Lights in the Operation Indicator Section when
the output function assigned to auxiliary output
1 turns on. The ALARM1 indicator lights when

the process temperature exceeds the set point
temperature by more than the alarm deviation
value.

Identifying Temperature Controller Keys

Indicator Name Description

Mode Key Press the Mode key to shift the display to the next

set of parameters. The menu screen displays.

Down Key Press the Down arrow key to lower the process air

set point temperature. During setup, it lets you
decrease the value of the parameter displayed on
the set point LED readout.

Up Key Press the Up arrow key to raise the process air set

point temperature. During setup, it lets you
increase the value of the parameter displayed on
the set point LED readout.

Dehumidifying Dryers Chapter 4: Operation 21 of 53

Setting the Process Air Temperature

When setting the process air temperature, consult with the resin manufacture for the
recommended drying temperature.

To change the process air temperature set point with the dryer running:

• Press

• Press

to raise the set point to the temperature you want.

to lower the set point to the temperature you want.

Restoring the Process Air Temperature Controller (E5CN) to Factory Settings

If the preset parameters on the controller have been tampered with and it no longer properly
controls temperature and displays dew point, you can restore the controllers to the factory
setup. Call the Service Department for detailed instructions.

E5CN Operating Parameters

The E5CN controller has several mode selections. Within each mode are numerous
parameters that can be set.

The factory has set the security level to protect the critical parameters from being accidentally
changed. Below is an explanation of the operating modes you will have access to and on the
following page are the manufacturers’ default settings.

Available E5CN Modes

Operation Level

Indicator Name Description

Run/Stop Mode
(r-S)

When “RUN” is selected, the control is running.
When “STOP” is selected, the control is stopped.
When the control is stopped, the STOP display
lights. The default is set to “RUN.”

Alarm Value 1
Mode (AL-1)

35°F or 10°C

This setting is used to indicate how many degrees
the process temperature will be allowed to exceed
the set point temperature. An alarm output will
turn off the dryer.

Dehumidifying Dryers Chapter 4: Operation 22 of 53

Adjustment Level

Indicator Name Description

Auto-Tune Mode
(At)

See Page 19 of Chapter 3 for instructions on how
to Auto-Tune your dryer.

Note: Although the

controller is calibrated at the factory,
the manufacturer recommends that the
unit be Auto-Tuned prior to dryer
startup.

Temperature Input
Shift Mode (TnS)

Proportional Band

Mode (P)

Integral Time

Mode (I)

This setting is used to offset an error between the
set point and the actual temperature. The entire
input range is shifted by a set figure
preprogrammed by the operator.

This setting controls the amount in which the
manipulated variable (MV) is proportionate to the
deviated value or controller error.

Setting this feature, gives the control an action that
is proportionate to the time integral of the control
error. By using this setting, proportional action is
used in combination with integral action to offset
the control error and the set point will begin to
match the control temperature (PV or process
value).

Derivative Time

Mode (d)

Setting the derivative control provides the
controller with the ability to correct for a future
error in the previously set process output.

Dehumidifying Dryers Chapter 4: Operation 23 of 53

Entering Operating Parameters to Select Modes

To enter the display:

1. Press the

2. Press

Mode Display key to view the Run/Stop & Alarm 1 Modes.

and to set the higher or lower the values of the parameter or turn that

function On or Off.

The SV readout displays the different values for the parameter within a mode.

3. To switch modes within a level, press and hold the Level Display key for one (1)

second.

The PV readout will display the different parameters within each mode.

4. Use short presses on the Mode Display key to display each parameter within a mode.

The SV readout displays the different values for the parameter within a mode.

5. Press and to set the higher or lower the values of a parameter or turn that

function On or Off.

6. Press

Figure 6: Settings for Process Temperature Controller (E5CN), Part No. A0567917

Level Key once to return to the Process Temperature Setting.

Mode Parameter Setting range Default Manuf. setting

Operation

Mode Parameter Setting range Default Manuf. setting

Adjustment

Run/Stop Run/Stop Run ­Alarm value 1 -1999 to 9999 0 35

AT execute/cancel ON, OFF OFF ?
Temperature input shift -199.9 to 999.9 0.0 ­Proportional Band 0.1 to 999.9 8.0 ?
Integral Time 0 to 3999 233 ?
Derivative Time 0 to 3999 40 ?

Dehumidifying Dryers Chapter 4: Operation 24 of 53

Process Air Dew Point Display

Optional

The Process Air Dew Point meter indicates the current process air delivery moisture content.
Standard dryers use a microprocessor-based controller for displaying dew point air
temperature. The controller is a modular, self-contained unit removable from the mounting
housing. All parameters are factory set and adjusted; normally, no field adjustment to the
internal controls is necessary.

Figure 7: Typical Dew Point Display Monitor; Part Number A0555757

PV

SV

OUT1

OUT2 M ANU STOP RMT AT SUB1

AT

OMRON

E5CK

Note: The only functional buttons on this controller are the up and down

keys.

Setting the High Dew Point Alarm

The high dew point alarm setting is changed by pressing the up and down keys to input the
alarm value. The factory setting for Alarm Value 1

(AL-1 ) is -10°F (-23°C).

Restoring the Process Air Dew Point Meter (E5CK) to Factory Setup

If the preset parameters on the controller have been tampered with and it no longer functions
properly, call the Service Department. This controller is not meant to be modified.

Note: The dew point alarm monitors and indicates a deviation from the set

point.

Dehumidifying Dryers Chapter 4: Operation 25 of 53

Redundant Safety Controller Display
Optional

The Redundant Safety Controller limits the process air temperature from exceeding the upper
temperature range set by the E5CN Temperature Controller. Standard dryers use a
microprocessor-based controller for limiting the process air temperature. The controller is a
modular, self-contained unit removable from the mounting housing. All parameters are
factory set and adjusted; normally, no field adjustment to the internal controls are necessary.

Figure 8: Typical Redundant Safety Controller Display; Part No. A0568961

Setting the Redundant Safety Controller

The Redundant Safety Controller alarm setting is changed by pressing the up and down keys
to input the alarm value. The upper display reading indicates the Process Value, while the
lower display indicates the High Point Setting alarm value. The factory setting for the High

Point Alarm Value

Restoring the WATLOW Redundant Safety Controller to Factory Setup

If the preset parameters on the controller have been tampered with and it no longer functions
properly, see page 28 for Factory Default. This controller is not meant to be modified.

WATLOW Operating Parameters

WATLOW controller has only one mode selection; ALARM.

The
The factory sets the security level to protect the critical parameters from being accidentally

changed. Below is an explanation of the modes you will have access to and the manufacturer
default settings.

(L1-hi ) is 150°F (-23°C).

Dehumidifying Dryers Chapter 4: Operation 26 of 53

Entering Operating Parameters to Select Modes

To enter the display:

1. Press both the Up

and Down keys for three seconds from the home page. The word

SEE will appear in the upper display and PAGE will appear in the lower display.

2. Press the Advance Key

3. Press the Up

or Down keys to change the parameter value.

to move through the parameter prompts.

4. Press the RESET Key at any time to return to the Home Page display.

Figure 9: Setting List for Redundant Safety Controller (WATLOW), Part No. A0568961

Mode Parameter Setting range Default Manf. setting

SEn Sensor Type 0-3 0 -

Lin Thermocouple Linearization 0-10 0 H (1)

C-F Temperature Units Fahrenheit / Celsius F -

S.dEC Temp. Decimal Places 0 – 0.0 0 -

IS.En INFOSENSE™ Yes / No No ­Sc.Lo Process Scale Low 4.00 to 20.00 mA

1.00 to 10.00V

Sc.hi Process Scale High 4.00 to 20.00 mA

1.00 to 10.00V

CAL Calibration Offset -999 to 999 0 -

Ftr.E Input Filter Off, DiSP, Cont, both OFF -

Ot 1 Output 1 Function Limit (2) (2) ­LSd1 Output 1 Limit Sides Both, High, Low Both High
hyS1 Limit 1 Hysteresis 0.0 to 999.0 1.0 -

Ot2 Output 2 Function Off / Process Alarm / Limit (2) OFF -

LSd2 Output 2 Sides Both / high / low Both -

None, Process Value, Limit 1 Low Set,
Limit 1 High Set, Limit 2 Low Set, Limit

UdSP Upper Display Look

LdSP Lower Display Look

LOC Lockout

2 High Set, Alarm 2 Low Set, Alarm 2
High Set, Limit 3 Low Set, Limit 3 High
Set, Alarm 3 Low Set, Alarm 3 High Set
None, Process Value, Limit 1 Low Set,
Limit 1 High Set, Limit 2 Low Set, Limit
2 High Set, Alarm 2 Low Set, Alarm 2
High Set, Limit 3 Low Set, Limit 3 High
Set, Alarm 3 Low Set, Alarm 3 High Set
(0) no lockout, (1) Programming and
Setup Page Locked, (2) Limit Set
Points are the only Operation Page
parameters accesible, (3) Full Lockout.

4.00 mA

1.00V

20.00 mA

5.00 V

Process -

Limit 1

High Set

0 2

0

400

-

Dehumidifying Dryers Chapter 4: Operation 27 of 53

4-3 System Operation Procedures

Controller Operation (Without Optional Alarm Horn & Reset Button)

1. Turn the disconnect on the control panel to the ON position. Power is applied to the voltage

line fuses, line side of the control power switch and the temperature controller.

2. Turn the control power switch to the

ON position. Power is applied to the programmable relay

and dew point controller. The valve will move to the start position as follows:

a. The valve motor rotates until the cam switch makes 2 transitions.
b. If the cam switch does not make a transition within 10 seconds, a valve

motor fault is generated. “

VALVE MTR” is displayed on the relay screen,

the alarm light is activated. The valve motor, heaters, and blower shut off.
To restart the dryer, cycle control power to deactivate the alarm light and

restart the valve motor sequence.

Note: The relay screen which contains the Alarm Display Messages is

located inside the controller enclosure. For a list of Alarm Display
Messages, see Page 33. (Turning off the dryer resets the alarm)

WARNING! Do not attempt to check the Alarms on the Controller located within the

unit enclosure unless you are a qualified electrician!

c. The valve will normally complete one full cycle (revolution).

If the drying process shuts down due to an alarm, the dryer has been setup to
have the following operational features:

• The bed in process at power-down will remain in process.

• The bed in regeneration at power-down will remain in regeneration.

• The regeneration timing cycle will restart from the beginning.

3. Once the control power is on and no fault conditions exist, turning the OFF-ON-START switch

to the START position will start the dryer as follows:

a. The process heater is turned on and controlled by the E5CN controller.
b. The process/regen blower is started.
c. The regen heater is turned on and the regeneration timing sequence is

initiated. The regen heater is controlled by the E5C2 controller. For default
timing settings for regeneration, see the table below.

Model Heating Cooling
15 cfm
30 cfm
60 cfm

35 30
40 40

4. If either the left or right bed safety temperature switch opens, a regen heater fault is generated.

HIGH TEMP” is displayed on the relay screen. The alarm light is activated. The regen heater is

“

turned off.

Dehumidifying Dryers Chapter 4: Operation 28 of 53

5. If the 1TCU (E5CN) controller faults, the optional redundant high temperature safety device

opens, or the process heater safety switch opens, a heater fault is generated. “
displayed on the relay screen. The alarm light is activated. The process heater, regen heater, and
process/regen blower are turned off.

HIGH TEMP” is

Turn the
light and restart the dryer. If the fault condition still exists, the dryer will not restart.

6. If the process blower overloads trips, a process blower fault is generated. “

displayed on the relay screen. The alarm light is activated. The process heater, regen heater, and
process/regen blower are turned off.

Reset the motor overload and turn the Off-On-Start switch to the START position to
deactivate the alarm light and restart the dryer.

7. The valve position limit switch enables the right bed heater and provides an input signal to the

programmable relay when actuated by the cam lobe. When the cam lobe position is high, the right
bed is activated. When the cam lobe position is low, the left bed is activated. Each heater is

OFF

controlled by the OMRON E5C2 controller.

8. Upon completion of the

disabled by the programmable relay and the COOL time begins.

9. Once the Cool time has expired, the valve motor is turned on until the cam switch makes a

transition. Upon making a transition, the timing sequence is restarted for the new bed.

10. When no fault conditions exist, the display reads “

11. When a dew point fault is generated by the optional dew point controller, the alarm light will

activate. The alarm light will flash, indicating a non-critical fault. Press Alarm Reset to deactivate
the alarm until the next dew point fault occurs.

12. The top 2 lines of the display show the

regeneration sequence. Changes to these times can be made by the operator as follows:

OFF-ON-START switch to the START position to deactivate the alarm

PROC BLWR” is

ON-

HEAT portion of the regeneration sequence, the regen heaters are

SYSTEM NORMAL”.

HEAT and COOL times (in minutes) for the

a. Press the up or down arrow until the cursor is positioned at the number to be

changed.

b. Press the

number.

c. Press the

d. Press the

“+” key to increment the number, or the “-“key to decrement the

“OK” key to accept the value and write to the relay memory.

OR

“ESC” key to cancel the changes.

Note: A change will NOT take effect until step 12-c is done.

13. The dryer is shut off by turning the control power switch to the OFF position.

14. Refer to Schematic drawing A0566087 enclosed in the control enclosure.

Controller Operation (With Optional Alarm Horn & Reset Button)

1. Turn the disconnect on the control panel to the ON position. Power is applied to the voltage

line fuses, line side of the control power switch and the temperature controller.

2. Turn the control power switch to the ON position. Power is applied to the programmable relay

and dew point controller. The valve will move to the start position as follows:

Dehumidifying Dryers Chapter 4: Operation 29 of 53

a. The valve motor rotates until the cam switch makes 2 transitions.
b. If the cam switch does not make a transition within 10 seconds, a valve

motor fault is generated. “VALVE MTR” is displayed on the relay screen,
the alarm horn and light are activated. The valve motor, heaters, and blower
shut off. Pressing the ALARM RESET pushbutton will deactivate the alarm
horn and light.

Cycle control power to restart the dryer.

Note: The relay screen which contains the Alarm Display Messages is

located inside the controller enclosure. For a list of Alarm Display
Messages, see Page 35.

WARNING! Do not attempt to check the Alarms on the Controller located within the

unit enclosure unless you are a qualified electrician!

c. The valve will normally complete one full cycle (revolution).

If the drying process shuts down due to an alarm, the dryer has been setup to
have the following operational features:

• The bed in process at power-down will remain in process.

• The bed in regeneration at power-down will remain in regeneration.

• The regeneration timing cycle will restart from the beginning.

3. Once the control power is on and no fault conditions exist, turning the Off-On-Start switch to

the START position will start the dryer as follows:

a. The process heater is turned on and controlled by the E5CN controller.
b. The process/regen blower is started.
c. The regen heater is turned on and the regeneration timing sequence is

initiated. The regen heater is controlled by the E5C2 controller. Default
timing for regeneration is 35 minutes for HEATING and 30 minutes for
COOLING.

4. If either the left or right bed safety temperature switch opens, a regen heater fault is generated.

“HIGH TEMP” is displayed on the relay screen. The alarm horn and light are activated. Pressing
the ALARM RESET pushbutton will deactivate the alarm horn and light.

5. If the OMRON controller faults, the optional redundant high temperature safety device opens,

or the process heater safety switch opens, a process heater fault is generated. “HIGH TEMP” is
displayed on the relay screen. The alarm horn and light are activated. The process heater, regen
heater, and process/regen blower are turned off. Pressing the ALARM RESET pushbutton will
deactivate the alarm horn and light.

Turn the Off-On-Start switch to the START position to restart the dryer. If the fault
condition still exists, the dryer will not restart.

6. If the process blower overloads trips, a process blower fault is generated. “PROC BLWR” is

displayed on the relay screen. The alarm horn and light are activated. The process heater, regen
heater, and process/regen blower are turned off. Pressing the
deactivate the alarm horn and light.

ALARM RESET pushbutton will

Dehumidifying Dryers Chapter 4: Operation 30 of 53

Reset the motor overload and turn the Off-On-Start switch to the START position to
restart the dryer.

7. The valve position limit switch enables the right bed heater and provides an input signal to the

programmable relay when actuated by the cam lobe. Each heater is

OMRON E5C2 controller.

ON-OFF controlled by the

8. Upon completion of the

disabled by the programmable relay and the

9. Once the

transition. Upon making a transition, the timing sequence is restarted for the new bed.

10. When no fault conditions exist, the display reads “

11. When a dew point fault is generated by the optional dew point controller, the alarm horn and

light will activate. The alarm light will flash, indicating a non-critical fault. Press Alarm Reset to
deactivate the alarm until the next dew point fault occurs.

12. The top 2 lines of the display show the HEAT and COOL times (in minutes) for the

regeneration sequence. Changes to these times can be made by the operator as follows:

COOL time has expired, the valve motor is turned on until the cam switch makes a

a. Press the up or down arrow until the cursor is positioned at the number to be

b. Press the “+” key to increment the number, or the “-“ key to decrement the

c. Press the “OK” key to accept the value and write to the relay memory.

d. Press the “ESC” key to cancel the changes.

HEAT portion of the regeneration sequence, the regen heaters are

COOL time begins.

SYSTEM NORMAL”.

changed.

number.

OR

Note: A change will NOT take effect until step 12-c is done.

13. The dryer is shut off by turning the control power switch to the OFF position.

14. Refer to Schematic drawing A0566087 enclosed in the control enclosure.

Alarm Display Messages

Note: The relay screen which contains the Alarm Display Messages is

located inside the controller enclosure.

WARNING! Do not attempt to check the Alarms on the Controller located within the

unit enclosure unless you are a qualified electrician!

The following is a list of Alarm Display Messages which can be found on the relay screen:
* Turning OFF the dryer clears the Fault/Alarm.

Dehumidifying Dryers Chapter 4: Operation 31 of 53

Temperature Controller Alarm and/or

Regen Heater Temp Switch and/or

Process Heater Temp Switch and/or

Redundant Temp Safety

Blower Overload

Valve Motor Time-Out

No Alarms

HIGH TEMP

PROC BLWR

VALVE MTR

HEAT 35
COOL 30
SYSTEM
NORMAL

4-4 Auto-Tuning the Dryer

1. For Auto-tuning, press the level key once. The AT screen will show with the setting OFF.

2. Press the

3. Press the level key again to go back to the Temperature Screen. Your actual temperature will

start to flash for about 10-20 minutes with the temperature fluctuating up and down during that
period. After the flashing stops, it means auto-tuning has finished.

4-5 Shutting Down the Dryer

1. Turn off the conveying system supplying the drying hopper.

2. When processing is complete, close the hopper slide gate and shut down any in-line companion

equipment, such as the aftercooler.

3. Turn the Dryer

Dehumidifying Dryers Chapter 4: Operation 32 of 53

UP arrow to change the setting to ON.

ON/OFF selector switch to OFF.

4. Turn the system

5. If needed, empty the drying hopper.

6. For maintenance or a long term shutdown, open (de-energize) the electrical disconnects at the

dryer and at the power drop.

ON/OFF switch to OFF.

Dehumidifying Dryers Chapter 4: Operation 33 of 53

Chapter 5: Maintenance

5-1 Preventative Maintenance Schedule

The checklist below contains a list of items which should be inspected and/or replaced to
keep your Portable Drying/Conveying System operating at peak efficiency. Perform each
inspection at the regular intervals listed below.

System model #

Serial #

Date/

Date/

Date/

Date/

Date/

Date/

Date/

Date/

Date/

Date/

Date/

Every Day

Inspect all filters for
wear, replace/clean
if dirty or worn.

By

By

By

By

By

By

By

By

By

By

By

Date/

By

Date/

Date/

Date/

Date/

Date/

Date/

Date/

Date/

Date/

Date/

Date/

Every week

Check to make
sure that all hose
connections are
air tight.

By

By

By

By

By

By

By

By

By

By

By

Date/

By

Every month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Lock out electrical
power and inspect
electrical wiring for
integrity.
Lock out electrical
power and check
heater elements for
continuity using an
ohmmeter.
Check dew point
and temperature
tracking with an
external dew point
monitor and
pyrometer.
Visually inspect the
shifting of the
airflow valve during
one cycle.

Every year

Inspect desiccant. Replace
if brown or broken.

Next scheduled

inspection

Actual inspection

Date/By

Next scheduled

inspection

Actual inspection

Date/By

Every two years

Replace desiccant.

Scheduled

replacement date

Actual replacement

Date/Work done by

Scheduled

replacement date

Actual replacement

Date/Work done by

- Photocopy this page for your maintenance records -

Date/

By

Date/

By

Dehumidifying Dryers Chapter 5: Maintenance 34 of 53

5-2 Preventative Maintenance

This section describes maintenance procedures which will increase the longevity and
efficiency of your dehumidifying dryer. Perform them at the regular intervals listed on the
dryer checklist on the previous page.

Servicing Process Air Filters

Caution! Operating the dryer without the process air filter installed voids your

warranty!
Filter cleaning is an important part of your dryer maintenance program.

Dehumidifying dryers have a single cartridge canister-type filter in the process air loop. The
filter protects blowers from plastic fines drawn in from the drying hopper and prevents the
desiccant from being contaminated. Regular filter cleaning is essential to keep your dryer
operating at peak efficiency.

You can blow or vacuum the dirt out of the filter with compressed air, but remember, it could
become damaged from high-pressure blowing.

Recommendations for Cleaning and Replacing Filters

• Turn off and/or lock out electrical power to the dryer.

• Remove the threaded fastener securing the filter access cover, then remove the cover.

• Remove the nut on the center retaining rod to remove the filter cartridge.

Figure 10: Air Filter Location and Disassembly

Air In

Air Out

Thumb Nut

Clamp

Dust Can

Filter

Cartridge

Filter Housing

Dehumidifying Dryers Chapter 5: Maintenance 35 of 53

Vacuuming

Try vacuum-cleaning a soiled filter first. Vacuuming removes most large particles and
surface contaminants, and may suffice for the first time you clean a filter. Use a commercial­duty (recommended) or household vacuum cleaner. Vacuum the filter from the air intake
(dirty) side only.

Cleaning with Compressed Air

Blow clean, dry compressed air up and down the pleats, blowing out the filter
from the inside out. Remove loose dirt from the filter with compressed air or
vacuum from the outside.

Caution! DO NOT clean/wash filter with water!

After each cleaning:

• Inspect the filter element. Briefly hold a light bulb behind the element

and look for any

fatigued paper or residual dirt. Inspect for holes

and tears by looking though the filter toward a bright light. Check for
damaged gaskets or dented metal parts. Do not re-use a damaged
filter!

• Check the gasket for damage. A damaged gasket allows contaminants

into the process. Replace as needed.

Servicing the Dew Point Monitor

The accuracy of the dew point monitor on mini dryer systems depends on proper operation of
the dew point sensor and the control board. The dew point sensor is in the process air stream
and is therefore susceptible to contamination.

Dew point sensor life depends on:

• Air temperature and flow passing over the sensor.

• The amount of fines (dust) in the process air.

• The amount of plasticizer vapor in the process air.

Once every six months, the dryer operator should monitor the initial dew point sensor
readings and establish a periodic replacement schedule as needed.

Caution! Do not attempt to check the continuity or resistance of the dew point

sensor.

The sensor will be destroyed!

Dehumidifying Dryers Chapter 5: Maintenance 36 of 53

5-3 Corrective Maintenance

This section provides you with the information necessary to correct or repair any issues
which might appear during the normal operation of your dehumidifying dryer. Although we
have listed how to perform these procedures, it is recommended that you call the Service
Department to have any in-depth maintenance performed.

Symptoms of Worn Desiccant

The moisture absorption capacity of the desiccant used in your dehumidifying dryer degrades
after an indefinite period of time. Useful life depends on variables such as the condition of the
process filter, how much dust and fines have been passed through the filter and got into the
desiccant chamber, and plasticizer vapors in the return air.

WARNING! Handling desiccant material is HAZARDOUS.

Wear an N-100 type safety filter mask or equivalent to avoid prolonged
breathing of desiccant dust. Wear safety goggles and gloves to avoid
contact with eyes and skin.

• Handle with adequate ventilation.

• Wash hands thoroughly after handling.

+ FIRST AID +

In case of eye contact, immediately flush eyes

with plenty of water for at least 15 minutes.

SEE A PHYSICIAN IMMEDIATELY IF IRRITATION PERSISTS.

Replacing Worn Desiccant

Caution! DESICCANT BEDS ARE HOT DURING OPERATION.

To avoid burn hazard, make sure desiccant beds are sufficiently cool
before replacing worn desiccant.

To access the Desiccant Bed:

1. Disconnect electrical power to the dryer.

2. Using a 1/8” Allen wrench, remove the four (4) 10-32 button head screws holding the

Desiccant Cap to the Regeneration Heater.

3. Remove the Desiccant Cap.

4. With a shop vacuum, carefully remove all desiccant from each tower.

Dehumidifying Dryers Chapter 5: Maintenance 37 of 53

Figure 11: Desiccant Bed Location and Disassembly

Desiccant Cap

Desiccant Cap

Desiccant Cap

Undo (4) 10-32 Button

Undo (4) 10-32 Button

Undo (4) 10-32 Button
Head Screws using 1/8

Head Screws using 1/8

Head Screws using 1/8
Allen Wrench

Allen Wrench

Allen Wrench

1" Wide x 1/8" Thick Silicon

1" Wide x 1/8" Thick Silicon

13X Molecular Sieve

13X Molecular Sieve

8x12 Beads

8x12 Beads

1" Wide x 1/8" Thick Silicon

Strip and Stick Gasket

Strip and Stick Gasket

Strip and Stick Gasket

Regeneration Heater

Regeneration Heater

Regeneration

Regeneration

Thermocouple

Thermocouple

(2) 4-40 screws

(2) 4-40 screws

Hi Temperature

Hi Temperature

Snap Switch

Snap Switch

16 Mesh 0.028 Diameter Wire

16 Mesh 0.028 Diameter Wire

Stainless Steel Screen

Stainless Steel Screen

1" Wide x 1/8" Thick High

1" Wide x 1/8" Thick High

Temperature Gasket

Temperature Gasket

Caution! You should properly dispose of any discarded desiccant.

Consult local disposal regulations for more information.

Inspect each lower desiccant screen for tears or holes where desiccant burned-through.
Replace as needed.

1. After cleaning each chamber, add the full amount of bead desiccant specified per bed. Amounts are

listed in the Desiccant Amounts Table below. Smooth the top level, and finally add another
layer of the remaining bead desiccant to the top. Make sure this layer is level and smooth.

Tap the chambers with a rubber mallet gently for one or two minutes to make sure the
desiccant is packed tight. Add more desiccant if required.

2. Repeat the previous step for the other bed.

3. 3. Inspect the gaskets and replace if necessary. Place the screen in between the desiccant tank and the

cap.

4. Reconnect all the hoses and panels when done.

Dehumidifying Dryers Chapter 5: Maintenance 38 of 53

Figure 12: Required Desiccant Amounts

Dryer 8 x 12 bead Total

model Part no. lbs. Kg

15 cfm 7.0 3.25
30 cfm 15.75 7.25
60 cfm

W00018051

37.5 17.0

Replacing the regeneration heaters
Procedures (see figure 11).

1. Sketch the heater wiring configuration so you can properly re-wire the heater.

2. Remove the ceramic nuts and wires to the heater plate assembly being removed or replaced.

3. Remove the six (6) 10-32 button head screws securing the process heater plate using a 1/8” Allen

wrench and slide out the assembly.

4. Remove the heater(s) from the mounting plate by removing the large brass nuts and washers.

5. Re-install the heater(s) and heater plate assemblies in reverse order. Install new heater gaskets and

securely tighten all fasteners.

Caution! Heater loops should not touch each other.

“Hot spots” lead to premature heater failure!

6. Reinstall the wires based on the sketch you made earlier.
Reinstall the ceramic nuts to each heater terminal.

Replacing the Process Heater

The dehumidifying dryers utilize a single-phase Calrod-type heater element. This heater
element is mounted in the center compartment below the desiccant beds. Although the
replacement procedure is the same for each heater, the wattage varies by model, voltage,
temperature range, etc.

WARNING! Hazardous electrical current present.

Disconnect and lock out power before you replace heater elements!

Dehumidifying Dryers Chapter 5: Maintenance 39 of 53

Figure 13: Process Heater Location and Disassembly

1" Wide x 1/8" Thick High

Temperature Gasket

Undo (6) 10-32 Button
Head Screws using 1/8
Allen Wrench

(2) 4-40 screws

Hi Temperature

Snap Switch

Procedures

1. Sketch the heater wiring configuration so you can properly re-wire the heater.

2. Remove the ceramic nuts and wires to the heater plate assembly being removed or
replaced.

6. Remove the six (6) 10-32 button head screws securing the process heater plate using

a 1/8” Allen wrench and slide out the assembly.

7. Remove the heater(s) from the mounting plate by removing the large brass nuts and

washers.

8. Re-install the heater(s) and heater plate assemblies in reverse order. Install new

heater gaskets and securely tighten all fasteners.

Caution! Heater loops should not touch each other.

“Hot spots” lead to premature heater failure!

2. Reinstall the wires based on the sketch you made earlier.

3. Reinstall the ceramic nuts to each heater terminal.

Dehumidifying Dryers Chapter 5: Maintenance 40 of 53

Replacing/Cleaning the Cooling Coils

WARNING! Hazardous electrical current present.
Disconnect and lock out power before you replace heater elements!

Figure 14: Cooling Coil Location and Disassembly

1" Wide x 1/8" Thick High

Temperature Gasket

Undo (4) 10-32 Button
Head Screws using 1/8
Allen Wrench

Use compressed air or a steam
cleaner to blow the dust off or clean
any oily residue on the coil.

Water flow requirement:
If used as an After-Cooler: 3 to 4 GPM @80F.
If used as a Plasticizer Trap: 3 to 4 GPM @ 40F to 45F.

Note: To clean the cooling coil, use compressed air or a steam cleaner to blow the dust off or

clean any oily residue on the coil.

Replacement Procedures

1. Shut down the dryer, tag out and lock out the controls if necessary.

2. Shut the water off to the cooling coil.

3. Remove the four 10-32 bolts.

4. Gently slide the cooling coil out.

5. Visually inspect the coil for leaks, dirt, and ant sign of volatiles.

6. Blow the dust out, or if the coil is covered with plasticizer, steam clean it.

7. Place the coil back in its housing. Make sure the gasket is OK, replace if necessary.

8. Inset the four 10-32 bolts back in place.

9. Turn the water to the cooling coil back on.

Dehumidifying Dryers Chapter 5: Maintenance 41 of 53

6 Troubleshooting

6-1 Introduction

The utmost in safety precautions should be observed at all times when working on or around
the machine and the electrical components. All normal trouble-shooting must be
accomplished with the power off (or certified electrician should trouble shoot the unit) , line
fuses removed, and with the machine tagged as out of service.

The use of good quality test equipment cannot be over-emphasized when troubleshooting is
indicated. Use a good ammeter that can measure at least twice the AC and DC current that
can be encountered for the machine. Be sure that the voltmeter has at least minimum
impedance of 5,000 OHMS-per-volt on AC and 20,000 OHMS-per-volt on DC scales.
Popular combination meters, VOM and VTVM can be selected to provide the necessary
functions.

Before making haphazard substitutions and repairs when defective electrical components are
malfunctioning, we recommend that you check the associated circuitry and assemblies for
other defective devices. It is common to replace the obviously damaged component without
actually locating the real cause of the trouble. Such hasty substitutions will only destroy the
new component. Refer to wiring diagrams and schematics.

Locating mechanical problems, should they occur, is relatively straightforward. When
necessary, refer to the parts catalog section.

Alarm Message Cause Corrective Action Dryer Status

HIGH TEMP

The process
temperature has
exceeded the alarm
set point.

The high temperature
snap switch of the
process heater box
has tripped.

The high temperature
snap switch on of the
regeneration heater
boxes has tripped

Make sure the process filter
is clean. Clean or replace if
necessary.

Double check the alarm set
point.
Check the positioning of the
thermocouple inside the air
inlet of the drying hopper.
The tip of the thermocouple
should be centered to the
tube, and not touching any
metal part of the tube.
The drying temperature set
point is lower than dryer
capabilities. Check the dryer
specs.
Make sure all the hose
connections are tight.
Make sure the regeneration
timing cycle matches the
specs. If not contact Service
department.

- Dryer Shuts down:

- Process blower OFF.

- Process heaters OFF.

- Regen heaters OFF.

- Alarm light is ON

- Alarm horn is ON.

Dehumidifying Dryers 6Troubleshooting 42 of 53

Alarm Message Cause Corrective Action Dryer Status

HIGH TEMP

PROC BLWR

The process
temperature has
exceeded the alarm
set point.
The high temperature
snap switch of the
process heater box
has tripped.

The high temperature
snap switch on of the
regeneration heater
boxes has tripped

The process blower
pressure switch did not
detect enough
pressure.

Process blower
overload has tripped.
Process blower motor
has failed.

Lose contacts or wires.

The process heater
contactor has failed in the
closed position. Check
heater contactor, replace if
necessary.

Check the Process Heater
box high temperature snap
switch, replace if necessary
The Regeneration heater
contactor has failed in the
closed position. Check
heater contactor, replace if
necessary.
Check the high temperature
snap switches on the
regeneration heater
mounting plates, replace if
necessary.

Make sure the process air
filter is clean. Clean or
replace if necessary.

Check the rotation of the
blower.

Check the pressure switch
hose connection. Replace
hoses or the pressure
switch.
Check the over load rating
against the wiring diagram.
Adjust accordingly.
Check the wiring of the
blower. Make sure it is wired
for the proper voltage.

Check the process blower
fuses for any fault. Replace
if necessary.

Check the blower motor
starter. Replace if
necessary.

Check the blower motor.
Replace if necessary.
Check the incoming voltage
against the name plate of
the dryer.

- Dryer Shuts down:

- Process blower OFF.

- Process heaters OFF.

- Regen heaters OFF.

- Alarm light is ON

- Alarm horn is ON.

Dehumidifying Dryers 6Troubleshooting 43 of 53

Alarm Message Cause Corrective Action Dryer Status

VALVE MTR

The limit switch on the
valve may not have
been wired correctly.
The valve has made
enough rotations and
the correct position of
the valve was not
detected.

Valve motor or not
connected to 120V at
PLC/Circuit

Limit switch may be out of
position. Re-adjust the
switch to make sure it trips
when it is at the high
position, and it does not
touch the cam when it is at
the low position.

The switch is indicating the
incorrect desiccant tank is in
regeneration. Check the
wiring of the switch against
the wiring diagram. Make
sure all the wire connections
are tight.
Limit switch may be faulty.
Replace the switch and
make sure the wires are
connected correctly.

- Dryer Shuts down:

- Process blower OFF.

- Process heaters OFF.

- Regen heaters OFF.

- Alarm light is ON

- Alarm horn is ON.

6-2 Determining Temperature Controller Errors or Sensor Errors

Using a Thermocouple

If the controller displays a temperature that is close to room temperature (70ºF/21ºC) when
you short-circuit controller input terminals, the controller is normal and the sensor is probably
broken, short-circuited, or incorrectly wired.

Other service problems or questions can be answered by contacting the Service
Department.

Dehumidifying Dryers 6Troubleshooting 44 of 53

7 Appendix

7-1 Warranty

Unless otherwise specified, this product includes a Standard ONE YEAR PARTS
WARRANTY.

Warranty Specifications

The manufacturer hereby expressly warrants all equipment manufactured by it to be free from
defects in workmanship and material when used under recommended conditions, as set forth
in the operating manuals for such equipment. THE FOREGOING EXPRESS WARRANTY
IS EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES, GUARANTIEES,
AGREEMENTS, AND SIMILAR OBLIGATIONS OF THE COMPANY AND/OR
MANUFACTURER (UNLESS OTHERWISE SPECIFIED IN THE SPECIFIC PRICE
PAGE OR LIMITED BY THE MANUFACTURERS’ WARRANTY FOR PARTS). The
Company’s obligation is limited to repair or replace FOB the factory any parts that are
returned, prepaid, within one year of equipment shipment to the original purchaser, and
which in the Company’s opinion, are defective. Any replacement part assumes the unused
portion of this warranty.

Warranty Restrictions

This parts warranty does not cover any labor charges for replacement of parts, adjustment
repairs, or any other work. This warranty does not apply to any equipment which, in the
Company’s opinion, has been subjected to misuse, negligence, or operation in excess of
recommended limits, including freezing or which has been repaired or altered without the
Company’s express authorization. If the serial number has been defaced or removed from the
component, the warranty on that component is void. Defective parts become the property of
the warrantor and are to be returned immediately, without any further use or handling.

Warranty Liabilities

THE COMPANY EXPRESSLY DISCLAIMS ANY AND ALL LIABILITY FOR ANY
SPECIAL, CONSEQUENTIAL OR INCIDENTAL DAMAGES OR EXPENSES THAT
RESULT FROM THE USE OF THIS PRODUCT. Some states do not allow the exclusion or
limitation of special, consequential or incidental damages, so the above limitation may not
apply to you. The Company’s obligation for parts not furnished as components of its
manufactured equipment is limited to the warranty of the manufacturers of said parts. The
company neither assumes nor authorizes any other persons to assume for it any liability in
connection with the sale of its equipment not expressed in this warranty. No person, agent,
manufacturer, distributor, dealer, installer or company is authorized to change, modify or
extend the terms of this warranty in any manner whatsoever.

The time within which an action must be commenced to enforce any obligation of the
Company’s arising under this warranty, or under any statute or law of the United States or
any state thereof, is hereby limited to the duration of this warranty. Some states do not permit
this limitation, so the above may not apply to you. This warranty gives you specific legal
rights and you may also have other rights which vary from state to state. For transactions
involving the potential applicability of international law or that of a foreign country,
this warranty policy and the procedures hereunder shall be governed by

Dehumidifying Dryers 7Appendix 45 of 53

applicable federal and state law, but not by the United Nations Convention on Contracts for
the Sale of Goods.

Customer Responsibilities

Any sales, use, or other tax incident to the replacement of parts under this warranty is the
responsibility of the purchaser.

7-2 Technical Specifications

Annex B Information

The following design information is provided for your reference:

1. No modifications are allowed to this equipment that could alter the CE compliance

2. Ambient temperature: 0 degrees Celsius – Maximum (104 degrees Fahrenheit)

3. Humidity range: 50% relative humidity

4. Altitude: Sea level

5. Environment: Clean, dust-free and non-explosive

6. Radiation: None

7. Vibration: Minimal, i.e. machine mounting

8. Allowable voltage fluctuation: +/- 10%

9. Allowable frequency fluctuation: Continuous +/- 1%

Intermittent +/- 2%

10. Nominal supply voltage: 460/3/60 (Verify on serial number tag)

11. Earth ground type: TN (system has one point directly earthed through a protective

conductor)

12. Power supply should include a ground connection.

13. Over-current protection is supplied in the dryer, but additional protection should be supplied by

the user.

14. The door-mounted disconnect serves as the electrical disconnect device.

15. Dryer is not equipped with local lighting.

16. Functional identification

17. Dryer is equipped with a CE mark

18. Cable support may be required for power cord, depending on final installation.

19. No one is required to be in the interior of the electrical enclosure during the normal operation of

the unit. Only skilled electricians should be inside the enclosure for maintenance.

20. Doors can be opened with a screwdriver, but no keys are required.

21. Two-hand control is not required or provided.

22. All dryers should be moved around and set in a place with a lift truck or equivalent.

23. There are no frequent repetitive cycles that require manual control⎯repetitive functions are

automatic while the dryer is operating.

Dehumidifying Dryers 7Appendix 46 of 53

24. The machine is not equipped with cable-less controls.

25. Color-coded (harmonized) power cord is sufficient for proper installation.

Aftercooler Design Specifications

Entering water temp.

ºF ºC

85ºF

50°F (If used as Plasticizer trap)

10°C (If used as Plasticizer trap)

29ºC

7-3 Drawings and Diagrams

Figure 15: Standard Model (180°F to 250°F) Air Flow Schematic

Dryer valve

Utilizing -40F dew

point air to regenerate

and cool the

desiccant.

13X Molecular

Sieve 8x12

beads.

Double wall

constructed heater

housing and

desiccant

container.

Regeneration

thermocouple,

monitors and

controls the
regeneration
temperature

Pressure switch, makes

sure the blower is

functioning correctly.

2”

Hose

2” Hose

2”

Hose

Regeneration

2”

Hose

Process /
Air Filter

Make-Up

Air

Low watt density

heaters, can

operate safely

with minimum air

flow.

High

temperature

snap switches,

monitor the heat

status of the

heater housings.

High pressure peripheral

2-1/2” Hose

Process Air

Temperature

Thermocouple

Position

regenerative blower.

Return Air

Temperature

Thermocouple

Position

Insulated
stainless steel
drying hopper

2-1/2” Hose

Dehumidifying Dryers 7Appendix 47 of 53

Figure 16: High Heat Model (180°F to 400°F) Air Flow Schematic

Pressure switch, makes

sure the blower is

functioning correctly.

Dryer valve

Utilizing -40F dew

point air to regenerate

and cool the

desiccant.

13X Molecular

Sieve 8x12

beads.

Double wall

constructed heater

housing and

desiccant

container.

Regeneration

thermocouple,

monitors and

controls the
regeneration
temperature

2”

Hose

2” Hose

2”

Hose

Process /

Regeneration

Air Filter

Low watt density

heaters, can

operate safely

with minimum air

flow.

High

temperature

snap switches,

monitor the heat

status of the

heater housings.

2-1/2” Hose

Process Air

Temperature

Thermocouple

Position

High pressure peripheral

regenerative blower.

Optional Return

Air Cooler

2”

Hose

Return Air

Temperature

Thermocouple

Position

Insulated
stainless steel
drying hopper

2-1/2” Insulated

Delivery Air Hose

Dehumidifying Dryers 7Appendix 48 of 53

Figure 17: Low Heat Model (120°F to 250°F) Air Flow Schematic

Pressure switch, makes

sure the blower is

functioning correctly.

Dryer valve

Utilizing -40F dew

point air to

regenerate and cool

the desiccant.

13X Molecular

Sieve 8x12

beads.

Double wall
constructed

heater housing

and desiccant

container.

Regeneration

thermocouple,

monitors and

controls the

regeneration

temperature

Process /

Regeneration

Air Filter

Low watt density

heaters, can

operate safely with

minimum air flow.

High temperature

snap switches,

monitor the heat

status of the heater

housings.

High pressure

peripheral

regenerative blower.

2-1/2”

Hose

2”

Hose

Return Air

Temperature

Thermocouple

Position

Insulated

stainless steel

drying hopper

Optional Pre-Cooler for

Low Temperature

Operation 120F to 180F

Dehumidifying Dryers 7Appendix 49 of 53

7-4 Spare Parts List

Figure 18: Level 1 Spare Parts List (Electrical & Mechanical)

DRYER SPARE PARTS LIST AD15, AD30, AD60

LEVEL 1 ( Electrical Components )

PART # SIZE Description
A0568932 2 Fuse for the Heater Elements 3
A0568933 2.5 Fuse for the Heater Elements 3 3
A0568934 3 Fuse for the Heater Elements 3
A0534039 3.5 Fuse for the Heater Elements 3
A0534040 4 Fuse for the Heater Elements 3
A0534041 5 Fuse for the Heater Elements 3 3 3 3
A0534042 6 Fuse for the Heater Elements 3 3 3
A0534043 7 Fuse for the Heater Elements 3 3 3 3
A0534044 8 Fuse for the Heater Elements 3 3 3 3
A0534046 10 Fuse for the Heater Elements 3
A0534047 12 Fuse for the Heater Elements 3 3
A0534048 15 Fuse for the Heater Elements 3 3 3 3 3 3 3
A0534049 20 Fuse for the Heater Elements 3 3
A0568936 25 Fuse for the Heater Elements 33
A0434051 30 Fuse for the Heater Elements 3
A0568909 1 Fuse for the Process Blower 3
A0568910 1.125 Fuse for the Process Blower 3
A0568911 1.25 Fuse for the Process Blower 3
A0534804 2 Fuse for the Process Blower 3
A0568917 2.5 Fuse for the Process Blo wer 3 3 3
A0550577 3 Fuse for the Process Blower 3
A0568919 3.2 Fuse for the Process Blo wer 3
A0568921 4.5 Fuse for the Process Blo wer 3
A0550593 5.6 Fuse for the Process Blo wer 3 3
A0538062 6 Fuse for the Process Blower 3
A0568922 6.25 Fuse for the Process Blower 3
A0568923 7 Fuse for the Process Blower 3
A0568926 10 Fuse for the P r ocess Blower 3
A0538069 12 Fuse for the P r ocess Blower 33
A0536892 1.25 Fuse for the transfor mer 2 2 2
A0536894 1.6 Fuse for the transformer 2 2 2
A0536895 1.8 Fuse for the transformer 2 2 2
A0538001 3.2 Fuse for the transformer 2 2 2 2 2 2
A0538002 3.5 Fuse for the transformer 2 2 2
A0568941 2.8 Fuse for the transformer 1 (ALL)
A0558078 0. 3- 1 Motor Overload 1 1
A0558079 1-2.9 Mo t or O verload 1 1 1 1 1 1 1 1 1 1 1 1 1
A0558082 1. 6- 5 Motor Overload 111

15CFM

15CFM

15CFM

15CFM

15CFM

15CFM

30CFM

30CFM

30CFM

30CFM

30CFM

30CFM

60CFM

60CFM

60CFM

60CFM

60CFM

208V 3PH

220V 50 HZ 3PH

230V 3PH

400V 50 HZ 3PH

460V 3PH

575V 60 HZ 3PH

208V 3PH

220V 50 HZ 3PH

230V 3PH

400V 50 HZ 3PH

460V 3PH

575V 60 HZ 3PH

208V 3PH

220V 50 HZ 3PH

230V 3PH

400V 50 HZ 3PH

460V 3PH

60CFM

575V 60 HZ 3PH

LEVEL 1 ( Mechanical Components )

PART # SIZE Description
W00015435 Dew Point Sensor Insert Cabl e 1 1 1
A0548556 Dew Point Sensor 1 1 1
A0566467 Valve switch 1 1 1
W0005247 Process Air Filt er 1 1 1
W00018051 13X molecul ar Sieve Desi cc ant ( 8 X 12 Beads ) 4.75 Lbs. 12.25 Lbs. 27.5 Lbs.
W00013983 High Temperature Gasket . 135 Inches 163 Inches 188 Inches
A0566676 High Temperature Snap Switch. 3 3 3

Dehumidifying Dryers 7Appendix 50 of 53

Figure 19: Level 2 & 3 Spare Parts List (Electrical & Mechanical)

DRYER SPARE PARTS LIST AD15, AD30, AD60

15CFM

15CFM

15CFM

15CFM

15CFM

15CFM

30CFM

30CFM

30CFM

30CFM

30CFM

30CFM

60CFM

60CFM

60CFM

60CFM

60CFM

208V 3PH

230V 3PH

LEVEL 2 ( Electrical Components )

PART # SIZE Description
A0558000 Motor Starter 1 1 1
A0530042 Mercury Heater C ont act or 1 1 1
A0567917 Process Air Temperature Contr oller 1 1 1
A0544089 Regeneration Air Temperature Controller 1 1 1
A0558065 * Dew Point Moni t or 1 1 1
A0548555 * Dew Point Circ ui t B oard 1 1 1
A0505417 Regeneration T 'Co upl e R el a y 1 1 1

220V 50 HZ 3PH

460V 3PH

400V 50 HZ 3PH

208V 3PH

230V 3PH

460V 3PH

208V 3PH

230V 3PH

575V 60 HZ 3PH

220V 50 HZ 3PH

400V 50 HZ 3PH

575V 60 HZ 3PH

220V 50 HZ 3PH

460V 3PH

400V 50 HZ 3PH

LEVEL 2 ( Mechanical Components )

PART # SIZE Description
A0548621 Ceramic Ca p for the End of H eat er Elements 4 5 7
A0566478 750 W at ts Heat er e l ement 208/220 V ol t s 2 2 0 0
A0566479 750 W at ts Heat er e l ement 230 Volts 2 0 0
A0566480 750 W at ts Heat er e l ement 400 Volts 2 0 0
A0566481 750 W at ts Heat er e l ement 460 Volts 2 0 0
A0566482 750 W at ts Heat er e l ement 575 Volts 2 0 0
A0566483 1250 Watts Heater Element 208/220 Volts 2 2 5 5 4 4
A0566484 1250 Watts Heater Element 230 Volts 2 5 4
A0566485 1250 Watts Heater Element 400 Volts 2 5 4
A0566486 1250 Watts Heater Element 460 Volts 2 5 4
A0566487 1250 Watts Heater Element 575 Volts 2 5 4
A0566601 2500 Watts Heater Element 208/220 Volts 0 0 3 3
A0566602 2500 Watts Heater Element 230 Volts 0 0 3
A0566603 2500 Watts Heater Element 400 Volts 0 0 3
A0566604 2500 Watts Heater Element 460 Volts 0 0 3
A0566605 2500 Watts Heater Element 575 Volts 0 0 3
A0568139 Screen Cover for the D esi cc an t Tanks 2
A0568140 Screen Cover for the D esi cc an t Tanks 2
A0568141 Screen Cover for the D esi cc an t Tanks 2
A0566682 1/4" OD Te flon Tube. 5 Feet 5 Feet 5 Feet
A0566415 Washer / Gasket for the Heater Elements 8 10 14

DRYER SPARE PARTS LIST AD15, AD30, AD60

LEVEL 3 ( Electrical Components )

15CFM

15CFM

15CFM

15CFM

15CFM

15CFM

30CFM

30CFM

30CFM

30CFM

30CFM

30CFM

60CFM

60CFM

60CFM

60CFM

60CFM

PART # SIZE Description
A0567921 Power Disconnect 1 1 1
A0566096 Mitsubishi Programmable Relay Logic Controller 1 1 1
A0568961 Redundant Temperature Safety Control l er 1 1 1

208V 3PH

230V 3PH

220V 50 HZ 3PH

460V 3PH

400V 50 HZ 3PH

208V 3PH

230V 3PH

460V 3PH

208V 3PH

230V 3PH

575V 60 HZ 3PH

220V 50 HZ 3PH

400V 50 HZ 3PH

575V 60 HZ 3PH

220V 50 HZ 3PH

460V 3PH

400V 50 HZ 3PH

LEVEL 3 ( Mechanical Components )

PART # SIZE Description
A0534059 2" O.D. by 12 Ft Long Hi Tem p Hose. 1 1 1
A0534060 2-1/2" O.D. by 12 F t Long Hi Temp Hose. 1 1 1
A0566535 Return Air C ool i ng Coil 1 1 1
A0536628 208/460 Volt Process Blower. 1 1 1 1 1
A0536629 575 Volt Process Blower 1
A0534079 208/460 Volt Process Blower. 11111
A0535351 575 Volt Process Blower 1
A0552439 208/460 Volt Process Blower. 11111
A0552440 575 Volt Process Blower 1
W00 01533 5 Dew Point Sensor Manifold 1 1 1
A0548558 Gasket for the Dew Point Sensor 1 1 1

60CFM

575V 60 HZ 3PH

60CFM

575V 60 HZ 3PH

Dehumidifying Dryers 7Appendix 51 of 53

7-5 Returned Material Policy

Credit Returns

Prior to the return of any material authorization must be given by the manufacturer. A
RMA number will be assigned for the equipment to be returned.

Reason for requesting the return must be given.
ALL returned material purchased from the manufacturer returned is subject to 15% ($75.00

minimum) restocking charge.
ALL returns are to be shipped prepaid.
The invoice number and date or purchase order number and date must be supplied.
No credit will be issued for material that is not within the manufacturer’s warranty period

and/or in new and unused condition, suitable for resale.

Warranty Returns

Prior to the return of any material, authorization must be given by the manufacturer. A
RMA number will be assigned for the equipment to be returned.

Reason for requesting the return must be given.
All returns are to be shipped prepaid.
The invoice number and date or purchase order number and date must be supplied.
After inspecting the material, a replacement or credit will be given, at the manufacturer’s

discretion.

If the item is found to be defective in materials or workmanship, and it was

manufactured by our company, purchased components are covered under their specific
warranty terms.

7-6 Dryer Identification (Serial Number) Tag

(Located on back of Dryer)

Company Logo

XXX Series Dryer
Model Number XXX-15

Max Drying Capacity HR

460V Serial Number 060701R
1Ǿ Date of Manufacture 06/2003

4.5A
Over-current Protection Device (s) 4.5A Total
Frequency 50/60Hz
Compressed air supply None

Dryer Mass 400 lbs/(180 KG)
Electrical Diagrams &
Pneumatic Diagram

Street Address City, State Zip Code
Telephone Number

Dehumidifying Dryers 7Appendix 52 of 53

7-7 Technical Assistance

Parts Department

Call toll-free 7am–5pm CST [800] 423-3183 or call [630] 595-1060, Fax [630] 475-7005
The ACS Customer Service Group will provide your company with genuine OEM quality parts
manufactured to engineering design specific ations, which will maximize your equipment’s performa nce
and efficiency. To assist in expediting your phone or fax order, please have the model and serial
number of your unit when you contact us. A customer replacement parts list is included in this manual
for your convenience. ACS welcomes inquiries on all your parts needs and is dedic ated to providing
excellent customer service.

Service Department

Call toll-free 8am–5pm CST [800] 233-4819 or call [630] 595-1060
Emergencies after 5pm CST, call [847] 439-5655

We have a qualified service department ready to help. Service contracts are available for most
products.

Sales Department

Call [630] 595-1060 Monday–Friday, 8am–5pm CST
Our products are sold by a world-wide network of independent sales representatives. Contact our Sales
Department for the name of the sales representative nearest you.

Contract Department

Call [630] 595-1060 Monday–Friday, 8am–5pm CST
Let us install your system. The Contract Department offers any or all of these services: project planning;
system packages including drawings; equipment, labor, and construction materials; and union or non­union installations.

Dehumidifying Dryers 7Appendix 53 of 53